The teaching of first aid is in itself a valuable safety measure. Educating even a few people in first aid improves the safety of everyone they come into contact with.
Teaching first aid also provides an opportunity for teaching safety, prevention and risk reduction measures at the same time, as part of the first aid curriculum.
A person trained in first aid is more motivated to avoid personal injury, because their first aid training gives them a greater appreciation of the potential serious consequences.
Last but not least, someone trained in first aid can be taught to appreciate the importance of safety, prevention and risk reduction. This makes them an ideal advocate for spreading safety awareness to others in their organization or family. This "peer to peer" education can be very valuable.